Sergio D'Elia (born 5 May 1952) is an Italian politician, activist and former left-wing terrorist, now a human rights supporter and advocate of non-violence.

[1] D'Elia spent 12 years in prison for his affiliation to the terrorist organization Prima Linea; in 1986 he abandoned the armed struggle and Marxist ideology by adopting a left libertarian position, and soon joined the Radical Party (a socially liberal and libertarian political organization).

[1] Then, he founded in Rome (1993), with his first wife Mariateresa Di Lascia, Marco Pannella and former EU commissioner Emma Bonino (all politicians of Radical Party), the non-government group Hands Off Cain ("Nessuno tocchi Caino"), which fights against the death penalty and torture in the world.

[1] The great success of D'Elia and HOC was the United Nations moratorium on the death penalty (2007), proposed by Italy's government.

[2] He was an Italian Parliament member from 2006 to 2008.